Abbreviations of place names ...
Published: 1949
Place of publication: Montreal
Language: eng
Number of pages: 137
Subjects: Cipher and telegraph codes; Aeronautics; Abbreviations
Notes: At head of title: Doc. 6314-COM/509.

"Supersede[s] and cancel[s] the second edition of ICAO Doc 4937-COM/502 dated April 1948 together with Supplement no. 1 dated June 1948."

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